Abstract
A four year field study was conducted from 2010-11 to 2013-14 at the research farm of ICAR-Indian Institute of Wheat and Barley Research, Karnal, Haryana to evaluate the influence of timing and frequency of urea top dressing on wheat productivity. The 13 treatments consisted of three nitrogen levels (90, 120 and 150 kg N ha-1), two time of application (just before applying irrigations and about a week after irrigations when it was possible to walk in the field) and two schedule of application (three equal splits as 1/3rd basal, 1/3rd at first irrigation and 1/3rd at second irrigation;and four equal splits as 1/4th basal, 1/4th at first irrigation, 1/4th at second irrigation and1/4th at third irrigation) along with one absolute control. The study revealed that urea top dressed just before irrigation and nitrogen splitted in three equal doses led to better crop growth, yield attributes and yield of wheat leading to improved agronomic NUE (22.5-29.8 kg grain kg-1 applied N) than urea top dressed after irrigation and nitrogen splitting in four equal doses at all levels of nitrogen application (90-150 Kg ha-1). The highest wheat productivity was recorded with 150 kg N ha-1 applied in three splits with top dressing just before irrigation. Additional yield of 2.70-5.21q ha-1 (average 3.94 q ha-1) was produced when urea was applied just before irrigation as compared to ureatop dressed after irrigatin. This yield gain was 5.93 to 10.83 percent (average 8.36 %). This practice gave additional benefit of Rs. 4680 to 9043 ha-1 (average Rs. 6843 ha-1). Doi.org/10.25174/2249-4065/2019/83006
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Claims 6
Claim · model-written summary
Top dressing before irrigation in three splits improved wheat growth and yield attributes relative to after irrigation in four splits.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- urea top dressed just before irrigation and nitrogen splitted in three equal dosese0
- Outcome
- crop growth, yield attributes and yielde0
- Direction
- bettere0
- Comparator
- urea top dressed after irrigation and nitrogen splitting in four equal dosese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“urea top dressed just before irrigation and nitrogen splitted in three equal doses led to better crop growth, yield attributes and yield of wheat”
e1“than urea top dressed after irrigation and nitrogen splitting in four equal doses”
Claim · model-written summary
The before irrigation three split practice improved agronomic NUE to 22.5-29.8 kg grain kg-1 applied N.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- urea top dressed just before irrigation and nitrogen splitted in three equal dosese1
- Outcome
- agronomic NUEe0
- Direction
- improvede0
- Value
- 22.5-29.8 kg grain kg-1 applied Ne0
- Comparator
- urea top dressed after irrigation and nitrogen splitting in four equal dosese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“improved agronomic NUE (22.5-29.8 kg grain kg-1 applied N)”
e1“urea top dressed just before irrigation and nitrogen splitted in three equal doses”
e2“than urea top dressed after irrigation and nitrogen splitting in four equal doses”
t0“wheat growth”
Claim · model-written summary
The highest wheat productivity occurred at 150 kg N ha-1 in three splits before irrigation.
- Taxon
- wheatTriticum aestivume0
- Treatment
- 150 kg N ha-1 applied in three splits with top dressing just before irrigatione0
- Outcome
- wheat productivitye0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest wheat productivity was recorded with 150 kg N ha-1 applied in three splits with top dressing just before irrigation”
Claim · model-written summary
Applying urea before irrigation added 2.70-5.21q ha-1 of wheat yield versus after irrigation.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- urea was applied just before irrigatione0
- Outcome
- yielde0
- Direction
- Additionale0
- Value
- 2.70-5.21q ha-1e0
- Qualifier
- average 3.94 q ha-1e0
- Comparator
- ureatop dressed after irrigatine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Additional yield of 2.70-5.21q ha-1 (average 3.94 q ha-1) was produced when urea was applied just before irrigation as compared to ureatop dressed after irrigatin”
t0“wheat growth”
Claim · model-written summary
The yield gain from before irrigation urea was 5.93 to 10.83 percent.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- yield gaine0
- Direction
- gaine0
- Value
- 5.93 to 10.83 percente0
- Qualifier
- average 8.36 %e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This yield gain was 5.93 to 10.83 percent (average 8.36 %)”
t0“wheat growth”
Claim · model-written summary
The practice gave an additional benefit of Rs. 4680 to 9043 ha-1.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- additional benefite0
- Direction
- additionale0
- Value
- Rs. 4680 to 9043 ha-1e0
- Qualifier
- average Rs. 6843 ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This practice gave additional benefit of Rs. 4680 to 9043 ha-1 (average Rs. 6843 ha-1)”
t0“wheat growth”
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